Capacitor question?

Why Capacitor is used in electric fan?

11 Answers

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  • 1 decade ago
    Best answer

    Helps to keep the starter from going out when the fan is first turned on. The capacitor discharges into the motor and helps gets the motor running quicker and easier. Also keeps the amperage down.

  • 1 decade ago

    Basically a capacitor holds a charge. So when the fan is turned on the capacitor says charge the electrons. This is how the motor knows when to turn on.

    The other people here have studied more electronics then I, and may have a better answer.

  • 1 decade ago

    CAPACITOR MOTOR

    A single-phase induction motor with a main winding arranged for direct connection to the power source, and auxiliary winding connected in series with a capacitor. There are three types of capacitor motors: capacitor start, in which the capacitor phase is in the circuit only during starting, permanent-split capacitor, which has the same capacitor and capacitor phase in the circuit for both starting and running; two-value capacitor motor, in which there are different values of capacitance for starting and running.

    CAPACITOR START

    The capacitor start single phase motor is basically the same as the split phase start, except that it has a capacitor in series with the starting winding. The addition of the capacitor provides a more ideal phase relation and results in greater starting torque with much less power input. As in the case of the split phase motor, this type can be reversed at rest, but not while running unless special starting and reversing switches are used. When properly equipped for reversing while running, the motor is much more suitable for this service than the split phase start as it provides greater reversing ability at less watts input.

  • Anonymous
    1 decade ago

    the fan motor probably is a DC motor (not AC). So you need a good capacitor to transform your 110AC (or 220AC) to a DC voltage

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  • Papa
    Lv 7
    1 decade ago

    It acts as a booster to get the fan started.

    Go to http://www.howstuffworks.com/search.php fo more info.

  • Anonymous
    1 decade ago

    to move and store the electric charge

  • Danny
    Lv 5
    1 decade ago

    To start it spinning in the right direction.Once the fan is going the capicitor is no longer needed.....until you turn the fan on again.

  • Anonymous
    1 decade ago

    It provides a buffer/filter for initial start-up currents.

  • Anonymous
    1 decade ago

    Possibly for EMI issue ?

    Need to know more details on the schematic.

  • 1 decade ago

    Need more schematics on this...

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